Anti-aging composition

ABSTRACT

The present invention relates to an anti-aging composition. More specifically, the anti-aging composition according to the present invention is highly stable, harmless to the body, and effective in reducing wrinkles and improving elasticity of the skin due to the superb capability for stimulating collagen biosynthesis.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a U.S. National Phase of International Patent Application Ser. No. PCT/KR2017/003823 entitled “ANTI-AGING COMPOSITION,” filed on Apr. 7, 2017. International Patent Application Ser. No. PCT/KR2017/003823 claims priority to Korean Patent Application No. 10-2016-0051561, filed on Apr. 27, 2016. The entire contents of each of the above-cited applications are hereby incorporated by reference in their entirety for all purposes.

TECHNICAL FIELD

The present invention relates to an anti-aging composition, and more particularly, to an anti-aging composition for reducing skin wrinkles and improving skin elasticity, including a compound stimulating collagen biosynthesis, as an effective component.

BACKGROUND ART

Skin is an important organ responsible for various physiological functions such as a barrier function preventing moisture and useful components inside from being discharged to the outside, body temperature control, or excretion. In general, since the skin has many chances to be in contact with various external stimuli, wrinkles easily occur in the skin as compared with other organs. Particularly facial skin is directly exposed to sunlight, dry environment, pollutants, or the like, thereby being aged such as having wrinkles, earlier than the skin which is not exposed to the outside. The most characteristic change due to aging of skin tissue is a change in a skin matrix, in which human skin fibroblasts in a dermal layer are aged, which reduces the ability to produce fiber and a substrate, and an amount of the substrate is overall decreased, so that a thickness of skin is decreased to reduce skin elasticity and form wrinkles. That is, as aging proceeds, decreased elasticity, blood circulation disorder, weakening of a skin barrier, and the like of the skin becomes even more severe.

Recently, after introduction of functional cosmetics into the Republic of Korea, importance of new material development was highlighted, and functional new materials have been actively developed, however, there are not many functional anti-aging raw materials for reducing skin wrinkles and improving skin elasticity which have been actually commercialized. A research direction for reducing skin wrinkles may be classified into the followings: removing environmental factors accelerating skin aging such as ultraviolet rays, active oxygen and dry skin to delay skin aging itself; preparing prevention measures such as inhibition of elastinase, biosynthesis acceleration and decomposition inhibition of collagen, and synthesis acceleration of hyaluronic acid, based on the research results for a creation mechanism of skin wrinkles; and directly injecting collagen or hyaluronic acid to alleviate created skin wrinkles, supplementing reduced skin matrix components or cells to improve produced skin wrinkles, or the like.

Currently the most representative anti-aging functional raw material for reducing skin wrinkles and improving skin elasticity includes retinoids, vitamin C, and the like. Among the retinoids, retinoic acid is used as a powerful anti-aging therapeutic agent, however, has strong irritation to the skin, thereby being limitedly used as a therapeutic agent, and retinol, retinol palmitate, and the like which have relatively small irritation to the skin are widely used as a cosmetic material. However, when irradiated with light, retinol and retinol palmitate are denatured by light and have problems of phototoxicity causing irritation to the skin or the stability thereof, and though vitamin C is also a widely used therapeutic agent for reducing wrinkles, it has demerits of causing irritation to the skin due to its strong acidity, and having low stability of the material itself.

Accordingly, development of a new anti-aging cosmetic composition being safe to the body and highly effective, as compared with the conventional anti-aging composition is urgently required.

DISCLOSURE Technical Problem

An object of the present invention is to provide an anti-aging composition for reducing skin wrinkles and improving skin elasticity.

Another object of the present invention is to provide a method useful for reducing skin wrinkles and improving skin elasticity, by applying the anti-aging composition on the skin to accelerate collagen biosynthesis in the skin.

Technical Solution

In one general aspect, an anti-aging composition includes: a compound represented by the following Chemical Formula 1 as an effective component:

wherein

R₁ is independently of each other hydrogen, straight chain (C1-C30) alkyl, straight chain (C2-C30) alkenyl, straight chain (C2-C30) alkynyl, straight chain (C1-C30) alkoxy or straight chain hydroxy (C1-C30) alkyl; and

R₂ is

or a substituted or unsubstituted amino acid group, in which R₁₁ is hydroxy (C1-C30) alkyl.

The anti-aging composition according to an exemplary embodiment of the present invention provides a new use of the compound which is for reducing skin wrinkles and improving skin elasticity by accelerating collagen biosynthesis.

The present invention provides an in vitro collagen synthesis accelerating agent including a compound represented by the following Chemical Formula 1 as an effective component. Here, the collagen synthesis accelerating agent may refer to a composition for accelerating collagen synthesis.

In addition, the present invention provides a method for reducing skin wrinkles and improving skin elasticity by applying an anti-aging composition including the compound represented by Chemical Formula 1 as an effective component on the skin.

Advantageous Effects

The anti-aging composition according to the present invention has excellent stability, is harmless to the human body, and is superior in the effects of reducing skin wrinkles and improving skin elasticity by accelerating collagen biosynthesis.

DESCRIPTION OF DRAWINGS

FIG. 1 confirms a value of type-1 collagen following treatment of an anti-aging composition in Example 1.

FIG. 2 confirms collagen fiber of epidermis and a dermal layer following treatment of an anti-aging composition in Example 2.

BEST MODE

Hereinafter, the anti-aging composition according to the present invention will be described, however, technical terms and scientific terms used herein have the general meaning understood by those skilled in the art to which the present invention pertains unless otherwise defined, and a description for the known function and configuration obscuring the present invention will be omitted in the following description.

The term used in the present invention, “anti-aging” may be a concept embracing skin protection and improved skin condition, skin whitening, prevention or improvement of skin aging and wrinkles, pore tightening and minimizing, skin protection, an improved skin barrier function, mitigated irritation to the skin, skin cell proliferation and regeneration ability, antioxidant ability, improved collagen synthesis ability, and the like, and in particular, refers to having improved collagen synthesis ability.

The term used in the present invention, “applying” refers to bring the composition according to the present invention into contact with the skin of an individual by an optional appropriate method, which is intended to absorb the composition into the skin.

The term used in the present invention, “prevention” refers to all actions to inhibit or delay occurrence of wrinkles by applying the composition according to the present invention, and the term used in the present invention, “improvement” refers to all actions to improve or change a skin condition favorably, make skin elasticity higher than before, or delay a rate of loss of skin elasticity due to aging, by applying the composition according to the present invention.

The term used in the present invention, “wrinkles” refer to fine lines produced by skin aging, and may be caused by factors by genes, reduced collagen and elastin present in the skin dermis, external environment, and the like. In addition, the term “elasticity” refers to an elastic property represented by elastic fiber composed of elastin present in the dermal layer of the skin, and this elastic fiber has a very low coefficient of elasticity like rubber, thereby being easily denatured only with small power, and when the power is removed, easily returning to an original form. Here, the elastic fiber has the form in which microfibrils are embedded in an amorphous substrate called elastin, and the elastin is a protein composed of a very unique amino acid which is found only in elastic fiber called desmosine and isodesmosine derived from lysine. These desmosine, isodesmosine, and the like forms cross-links in a long peptide chain, and this structure allows elastin to have rubber-like properties.

The present applicant conducted an intensive study on a new raw material showing a strong effect on anti-aging and having excellent formulation stability, and as a result, derived that the compound represented by the following Chemical Formula 1 having an anti-inflammatory effect has effects of reducing skin wrinkles and improving skin elasticity, so that an anti-aging composition including the compound represented by the following Chemical Formula 1 as an effective component is provided, thereby completing the present invention.

wherein

R₁ is independently of each other hydrogen, straight chain (C1-C30) alkyl, straight chain (C2-C30) alkenyl, straight chain (C2-C30) alkynyl, straight chain (C1-C30) alkoxy or straight chain hydroxy (C1-C30) alkyl; and

R₂ is

or a substituted or unsubstituted amino acid group, in which R₁₁ is hydroxy (C1-C30) alkyl.

The terms, “alkyl”, “alkoxy” and other substituents including the “alkyl” part, described herein, includes all forms of straight chain. In addition, alkyl, alkoxy and hydroxyalkyl according to the present invention are preferentially those having 1 to 7 carbon atoms in a straight chain form, or having a straight chain form of 1 to 7 carbon atoms, however, those having 8 to 30 carbon atoms are also an embodiment of the present invention, of course.

In addition, “alkenyl” described herein is hydrocarbon in a straight chain form containing one or more double bonds, and an example thereof may include ethenyl, prop-1-en-1-yl, pro-p-1-en-2-yl, prop-2-en-1-yl, prop-2-en-2-yl, but-1-en-1-yl, but-1-en-2-yl, 2-methyl-prop-1-en-1-yl, but-2-en-1-yl, but-2-en-2-yl, buta-1,3-dien-1-yl, buta-1,3-dien-2-yl, and the like, but not limited thereto. “Alkynyl” described herein is hydrocarbon in a straight chain form containing one or more triple bonds, and an example thereof may include ethynyl, prop-1-yn-1-yl, prop-2-yn-1-yl, but-1-yn-1-yl, but-1-yn-3-yl, but-3-yn-1-yl, and the like, but not limited thereto.

In the anti-aging composition according to an exemplary embodiment of the present invention, the compound has excellent solubility and compatibility with a solvent, is safe to the body, and accelerates biosynthesis of type-1 and type 3 collagens of skin fibroblasts, thereby improving skin elasticity, and in term of having an excellent effect of reducing skin wrinkles, R₁ of the compound may be (C1-C20) alkyl, (C1-C20) alkoxy or hydroxy (C1-C20) alkyl in a straight chain form.

The compound according to an exemplary embodiment of the present invention is a very stable material so that a formulation is easily developed, and has no skin side effect such as a skin barrier dysfunction and epidermal hyperplasia, and particularly in terms of having excellent biosynthesis ability of type-1 collagen, more preferably, R₁ of the compound may be (C1-C5) alkyl in a straight chain form, and R₂ may be selected from the following structure, but not limited thereto:

wherein

R₂₁ to R₂₂ are independently of one another hydrogen or (C1-C7) alkyl.

In the anti-aging composition according to an exemplary embodiment of the present invention, it is preferred that R₂₁ and R₂₂ are independently of each other selected from the group consisting of methyl, ethyl and propyl, but not limited thereto.

In addition, as a result of adding the composition of the present invention to a culture medium of human-derived fibroblasts, and measuring amounts of two types of biosynthesized collagen, the present applicant proved that the compound represented by Chemical Formula 1 and the anti-aging composition including the compound as an effective component are very effective in accelerating biosynthesis of collagen, more particularly type-1 and type-3 collagens, thereby identifying the fact that the compound represented by Chemical Formula 1 and the anti-aging composition including the compound as an effective component are useful for the effects of improving skin elasticity and reducing skin wrinkles. In addition, the present applicant confirmed that the compound represented by Chemical Formula 1 and the anti-aging composition including the compound as an effective component do not show toxicity in a concentration range of not inducing cell proliferation, thereby identifying that the compound and the composition are very safe.

That is, the anti-aging composition according to an exemplary embodiment of the present invention accelerates biosynthesis of collagen as a skin external preparation, thereby exhibiting an effect useful for anti-aging, not causing skin side effects such as a skin barrier dysfunction and epidermal hyperplasia, possessed by retinoid and the like which were conventionally useful for anti-aging, and being very stable to easily develop a formulation, and thus, the composition is expected to be safely and effectively utilized as a cosmetic composition, a pharmaceutical composition, and the like.

The anti-aging composition according to an exemplary embodiment of the present invention, such as a cosmetic composition and a pharmaceutical composition includes the compound as an effective component preferably at 0.001 to 50 wt %, and more preferably 0.01 to 30.0 wt %, based on the total weight of the composition, but not limited thereto.

Hereinafter, the anti-aging cosmetic composition according to an embodiment of the present invention will be described in detail.

The cosmetic composition according to the present invention may further include one or more wrinkle reducing components selected from the group consisting of retinoic acid, TGF, protein derived from an animal placenta, betulinic acid and a chlorella extract, as a wrinkle reducing component known in the art, of course, for improving anti-aging, together with the compound. Here, the further wrinkle reducing component may be included at 0.000001 wt % to 10 wt %, based on the total weight of the cosmetic composition, and the wt % may be adjusted depending on the requirements such as collagen synthesis acceleration activity, skin safety, and ease of formulation with the compound represented by Chemical Formula 1.

In addition, the cosmetic composition according to an exemplary embodiment of the present invention may include one or more additives selected from one or more aqueous additives selected from the group consisting of purified water, a stabilizer, an emulsifier, a thickening agent, a moisturizer, a liquid crystal film enhancer, a pH controlling agent, an antimicrobial, an aqueous polymer, a coating agent, a metal ion sequestering agent, amino acid, organic amine, polymer emulsion, a pH adjusting agent, a skin nutrient, an anti-oxidant, an anti-oxidant auxiliary agent, a preservative, flavoring, and the like; and one or more oil-based additives selected from the group consisting of fat and oils, waxes, hydrocarbon oil, higher fatty acid oil, higher alcohol, synthetic ester oil, silicone oil, and the like.

Here, the aqueous additive is not limited, as long as it is generally used in the art, and a specific example thereof may be one or more selected from the group consisting of glycerin, dipropyleneglycol, butyleneglycol, pentyleneglycol, methyl propanediol, sorbitol, diglycerin, erythritol, pentaerythritol, polybutyleneglycol-10, polyglycerin-3, polyglycerin-4, polyglycerin-6, polyglycerin-10, polyglycerin-20, polyglycerin-40, sorbeth-5, sorbeth-6, sorbeth-20, sorbeth-30, sorbeth-40, inositol, maltitol, maltose, mannitol, mannose, lactitol, lactose, dihydroxypropyl PG-glucoside, dithiaoctanediol, fructose, glucamine, methyl glucamine, glucose, 1,2,6-hexanethiol, methyl gluceth-10, methyl gluceth-20, ozonized glycerin, phytantriol, thiglycerin, threitol, trimethylolpropane, xylitol, EDTA, guar gum, quince seeds, carrageenan, galactan, arabic gum, pectin, mannan, starch, xanthan gum, curdlan, methyl cellulose, hydroxy ethyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, chondroitin sulfate, dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate, hydroxyethyl guar gum, acrboxymethyl guar gum, dextran, kerat sulfate, locust bean gum, succinoglucan, caronic acid, chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol, polyvinyl pyrrolidone, carboxyvinyl polymer, sodium polyacrylate, polyethylene glycol, bentonite, methylparaben, propylparaben, phenoxyethanol, 1,2-hexanediol, ethylhexyl glycerin, and the like. In addition, the oil-based additive is not limited, as long as it is a raw material generally used in the art, and may be for example, liquid oils such as olive oil, camellia oil, jojoba oil, triglyceride, glycerin trioctanoate and glycerin triisopalmitate, solid oils such as palm oil, hydrogenated palm oil, hydrogenated oil and hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, lanolin, jojoba wax, and the like. An example of the hydrocarbon oil includes liquid paraffin, squalene, petrolatum, microcrystalline wax, and the like. An example of the higher fatty acid may be waxes such as lauric acid, myristic acid, palmitic acid, stearic acid and behenic acid, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, cetosteryl alcohol, and the like; the synthetic ester oil may be selected from the group consisting of higher alcohol such as isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, hexyl laurate, myristyl myristate, cetyl lactate, isocetyl isostearate, neopentyl glycol dicaprate, ethylhexyl glycerin, cetylethyl hexanoate, ethylhexyl palmitate and cetostearyl alcohol, chain type silicone oil such as dimethyl polysiloxane, methylphenyl polysiloxane and methylhydrdogenpolysiloxane, cyclic silicone oil such as dodecamethylcyclohexasiloxane and octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and the like, but not limited thereto.

The cosmetic composition according to an exemplary embodiment of the present invention may be prepared in the form of a general emulsion formulation and a solubilized formulation, of course, using a preparation method commonly known in the art, in addition to the preparation method particularly disclosed in the present invention. Here, the cosmetic composition may be properly selected according to the purpose, and as a specific example thereof, the composition may be formulated into the formulation selected from the group consisting of an emollient, an astringent, a nutritional toner, an eye cream, a nourishing cream, a massage cream, a cleansing cream, a cleansing foam, a cleansing water, powder, an essence, a face pack, and the like, but not limited thereto.

Hereinafter, the anti-aging pharmaceutical composition according to one embodiment of the present invention will be described in detail.

The anti-aging pharmaceutical composition according to an exemplary embodiment of the present invention may include a pharmaceutically acceptable carrier, according to the method which may be easily carried out by a person having ordinary skill in the art to which the invention pertains. The pharmaceutically acceptable carrier included in the anti-aging pharmaceutical composition of the present invention is commonly used in preparation, and may be lactose, dextrose, sucrose, sorbitol, mannitol, starch, acacia gum, calcium phosphate, alginate, gelatin, calcium silicate, microcrystalline cellulose, polyvinylpyrrolidone, cellulose, water, syrup, methyl cellulose, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate, or mineral oil, but not limited thereto. The anti-aging pharmaceutical composition of the present invention may further include a lubricant, a wetting agent, a sweetener, a flavoring agent, an emulsifier, a suspending agent, a preservative and the like, in addition to the above components.

The pharmaceutical composition according to an exemplary embodiment of the present invention may be prepared using a commonly known preparation method, of course, in addition to the preparation method particularly disclosed in the present invention, and may be formulated into an appropriate form as desired. As a specific example thereof, forms such as a lotion, an ointment, a gel, a cream, a patch and a spraying agent may be listed, but not limited thereof.

An embodiment of the present invention provides a collagen synthesis accelerating agent including the compound represented by the following Chemical Formula 1 as an effective component.

In addition, an embodiment of the present invention provides a method for reducing skin wrinkles and improving skin elasticity by applying an anti-aging composition including the compound represented by Chemical Formula 1 as an effective component on the skin.

Hereinafter, preferred exemplary embodiments will be provided in order to assist understanding of the present invention. However, the following Examples are only provided for easily understanding the present invention, and only illustrative, but do not limit the scope of the present invention in any way.

EXAMPLE 1

N-(2-hydroxyethyl)octanamide was added to a culture medium of human fibroblasts (DMEM medium, 10% fetal bovine serum, 1% antibiotics) to confirm the effect of accelerating type-1 collagen synthesis in a cell level. The measurement of the synthesized collagen was qualified using a procollagen type I C-peptide enzyme immunoassay kit (PICP EIA kit).

The human fibroblast culture medium was used to aliquot the human-derived fibroblasts (human fibroblasts) into 6 wells at 2×10⁵ cell/well. After cell adhesion was confirmed, the culture medium was treated with 2 ml of N-(2-hydroxyethyl)octanamide as an effective component (anti-aging composition) per each well, at a concentration of 20 uM. After the culture medium was cultured in an incubator under a condition of 37° C. and 5% CO₂ for 24 hours, type-1 collagen which is related to a wrinkle forming factor was measured in a cell extract. Here, the concentration of the anti-aging composition is within a range being not toxic and not deriving cell proliferation, when treating human-derived fibroblasts. The results were illustrated in Table 1 and FIG. 1.

EXAMPLE 2

When photo-aging of the skin proceeds by ultraviolet rays, a collagen fiber network in an epidermis-dermis junction is damaged. Thus, the amount and form of collagen fiber is used as an indicator of skin photo-aging. The skin tissue of a hairless mouse which was irradiated with ultraviolet rays after N-(2-hydroxyethyl)octanamide was applied, was stained with Masson's Trichrome, observed using an optical microscope (IX71, Olympus, JPN), and then photographed using a digital camera (DP71, Olympus, JPN).

Artificial skin (EpiDermFT™ from MatTek, Ashland, USA) was purchased, and stabilized in an exclusive medium (EFT-400) for 18 hours. On the surface of the artificial skin, 100 μl of N-(2-hydroxyethyl)octanamide as an effective component (anti-aging composition) at a concentration of 0.1% was applied. After 24 hours, the artificial skin tissue was immobilized with 10% formaldehyde, and embedded with paraffin, and a tissue sliced at 5 μm was stained with Masson's Trichrome (M&T), thereby observing a staining degree of collagen fiber. The results were illustrated in the following FIG. 2.

COMPARATIVE EXAMPLE 1

The effect of accelerating type-1 collagen synthesis was confirmed in the same manner as in Example 1, except that the effective component was not used (a negative control). In addition, type-1 collagen synthesis ability relative to the negative control was calculated as a ratio, and represented by a rate of increase. The results were illustrated in Table 1 and FIG. 1.

TABLE 1 Comparative Example 1 Example 1 type-1 collagen concentration (20 uM) 0.015 0.002 Rate of increase (%) 750 —

According to the result shown in Table 1, it was found that the anti-aging composition according to the present invention shows a remarkable rate of increase in the effect of accelerating type-1 collagen synthesis (a 750% level as compared with Comparative Example 1) relative to Comparative Example 1 (the negative control, non-treated group).

In addition, according to the photographs shown in FIG. 2, when a sample was treated with the anti-aging composition according to the present invention (Example 2), collagen fiber strongly stained with aniline blue was observed in the dermal layer under the epidermis. However, in Comparative Example 1, collagen fiber weakly stained with aniline blue was observed in the dermal layer under the epidermis. The results prove that the anti-aging composition according to the present invention is effective for photo-aging.

Accordingly, the anti-aging composition according to the present invention not only accelerates collagen fiber synthesis, but also effectively inhibits damage of a collagen fiber network in the epidermis-dermis junction, thereby excelling in preventing skin aging and reducing skin wrinkles, and thus, it is expected to utilize the composition in various formulations.

The present invention has been described in detail in specific parts, and it is obvious that such specific technique is only an embodiment to a person skilled in the art, without limiting the scope of the present invention thereto. Thus, the substantial scope of the present invention will be defined by the appended claims and their equivalents. 

The invention claimed is:
 1. A method for reducing skin wrinkles and improving skin elasticity by applying an anti-aging composition comprising a compound represented by Chemical Formula 1 as an effective component on skin to a human in need thereof:

wherein R_(i) is independently of each other hydrogen or straight chain (C1-C5) alkyl; and R₂ is

in which R₁₁ is hydroxy (C1-C30) alkyl.
 2. The anti-aging composition of claim 1, wherein the compound is 0.001 to 50 wt %, based on a total weight of the composition. 